LGS Mixed Practice Test #684

Question 1

India's rank in Ease of Doing Business 2020:

Accepted Answer

63rd — India ranked 63rd in World Bank's Doing Business 2020 report.

Answer

43rd

Answer

53rd

Answer

73rd

Question 2

Activation energy Ea can be determined by:‌​‍

Accepted Answer

Arrhenius plot (ln k vs 1/T) — slope = -Ea/R — Measure k at multiple T. ‌​‍Slope of ln k vs 1/T gives -Ea/R. Intercept gives ln A.

Answer

Only at one T

Answer

Graphing concentration

Answer

Spectroscopy only

Question 3

Mary Poonen Lukose holds the distinction of being the first woman from Kerala to earn a university degree. What specific field of study did she pursue, making her a pioneer in that profession for women in the region?

Accepted Answer

B. Medicine — Mary Poonen Lukose was the first woman from Kerala to obtain a university degree, specifically in Medicine (MBBS) from the Madras Medical College in 1908. She went on to become a pioneering female physician and the first Indian woman Surgeon General, breaking significant barriers for women in healthcare.

Answer

A. Law

Answer

C. Education

Answer

D. Engineering

Question 4

Pascal's law applies to:

Accepted Answer

Enclosed fluid at rest — pressure applied is transmitted equally in all directions — Basis of hydraulic press, brakes. Gain in force = ratio of areas.

Answer

Solids

Answer

Only gases

Answer

Moving fluids

Question 5

UNESCO headquarters is in:‌​‍

Accepted Answer

Paris — UNESCO (United Nations Educational, Scientific and Cultural Organization) is headquartered in Paris, France.‌​‍

Answer

Rome

Answer

Geneva

Answer

London

Question 6

A competitive inhibitor of an enzyme will typically affect the enzyme kinetics in which of the following ways?

Accepted Answer

A. Increase the apparent Km, with no change in Vmax — Competitive inhibitors bind reversibly to the enzyme's active site, competing with the substrate. This increases the apparent Km (meaning more substrate is needed to reach half Vmax) but does not change the Vmax, as high substrate concentrations can outcompete the inhibitor to achieve the maximum reaction rate.

Answer

B. Decrease the apparent Km, with no change in Vmax

Answer

C. Increase the apparent Km, and decrease Vmax

Answer

D. Decrease the apparent Km, and increase Vmax

Question 7

Which Indian English writer authored 'Midnight's Children', the Booker Prize winner of 1981?‌​‍

Accepted Answer

Salman Rushdie — Magical realism. ‌​‍Won Booker of Bookers. 'Satanic Verses' (1988) controversial — fatwa by Khomeini.

Answer

Vikram Seth

Answer

Anita Desai

Answer

R.K. Narayan

Question 8

The most malleable and ductile metal is:

Accepted Answer

Gold — Gold is the most malleable and ductile metal — 1 g can be beaten into ~1 m² leaf.

Answer

Iron

Answer

Aluminium

Answer

Copper

Question 9

Acetylcholine is a:

Accepted Answer

Neurotransmitter — Acetylcholine is a major neurotransmitter at neuromuscular junctions and in autonomic nervous system.

Answer

Hormone

Answer

Digestive enzyme

Answer

Antibody

Question 10

Hydrogen peroxide has the formula:‌​‍

Accepted Answer

H₂O₂ — H₂O₂ — used as antiseptic and bleaching agent.‌​‍

Answer

H₂O

Answer

HO₂

Answer

HO

LGS Mixed Practice Test #684